Home / 2,879.75-3,974.44-1,621.05

Finding the Fourth Proportional to 2,879.75, 3,974.44 and 1,621.05

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Solution

The fourth proportional to 2,879.75, 3,974.44 and 1,621.05 is: 2,237.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.75 : 3,974.44 = 1,621.05 : x
  2. Step 2: Convert to fraction form
    2,879.75/3,974.44 = 1,621.05/x
  3. Step 3: Cross multiply
    2,879.75x = 3,974.44 × 1,621.05
  4. Step 4: Simplify right side
    2,879.75x = 6,442,788.14
  5. Step 5: Solve for x
    x = 6,442,788.14/2,879.75
  6. Step 6: Final answer
    x = 2,237.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.